/Engine/Plugins/Online/OnlineSubsystem/Source/Public/Online.h
Get the interface for accessing the player friends services
Interface pointer for the appropriate friend service
namespace Online { static [IOnlineFriendsPtr](API\Plugins\OnlineSubsystem\IOnlineFriendsPtr) Online::GetFriendsInterface ( const [FName](API\Runtime\Core\UObject\FName) SubsystemName ) }